[Elecraft] KIO2 KIO2/100 Not working

David, I experinced a similar problem with my K2/100. The problem was an open rf choke in the data lines from the J8 Aux I/O. Have forgotten whether it was RFC6, 7, or 8 but checked each for continuity, found an open and replaced choke. Computer control resumed. Hope this helps. 73, Jac

[Elecraft] K2 to MacLogger Connect?

While waiting for your K3s, I wonder if anyone could help with a K2 to MacLogger connect problem? My K2, 3256 refuses to connect to my MacLogger program. About a month ago a connection problem surfaced one day after several years of reliable functioning. The problem symptoms are: When "R

[Elecraft] K2-100 Xmit Problem

I'd appreciate suggestions that might help me isolate a problem that I believe to be in the KPA100. Receive is fine on all bands. My K2/100 has been working wonderfully for three years. Now, suddenly, a problem appears on both on low and high power settings on 160-10mtrs. K2 Display shows,

[Elecraft] Battery Charger EMI

I have experienced a 17-meter, signal-killing, pulse-type, high noise level problem for several months now. I finally tracked it down to the battery charger that keeps a sump pump's inverter gel-cell, sealed Pb Acid batteries (80 amp/hr total) ready to supply power in event of a AC network

[Elecraft] Non-resonant attic loop

Not sure if this is any help, but L. B. Cebik, W4RNL has posted an article on shaping a loop into a star pattern on his website: http://www.cebik.com/wire/40star.html Jack Jack H. Shrawder, KT6JS K2 3256 "Success is the only option." --Dave Borges, DC ___

[Elecraft] Featherweight Yagi Design Questions

My summer project besides upgrading my K2-100 with the latest modes and maybe DSP, I'm thinking about the possibilities of building a 3-element, 20-meter monoband yagi with the design emphasis on light weight to enable use of a 40-ft steel, telescoping, TV-type mast and rotor which I can afford